The ultimate SMD marking codes database

Due to the small size of most SMD components, manufacturers are not able to write the full part number on the case. They use instead a marking code typically composed of a combination of 2 or 3 letters or digits. When repairing an unknown electronic board, it becomes so difficult to know what is the exact type of a given component. This database allows to quickly find the part number of a SMD component when you have only the marking code.

Showing codes starting with 'WI'

Marking
Name
Manufacturer/Case
Function
WI
BCR158L3
Infineon Technologies
TSLP-3
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=2.2k/47k, 170MHz
WI
BZT52B12
PanJIT Semiconductor
SOD-123
Zener diode
12V±2%, Izt=5mA, Zzt=25, 410mW
WI
BZT52B12S
Micro Commercial Components
SOD-323
Zener diode
11.76..12.24V, Izt=5mA, Zzt=25, 200mW
WI
BZT52C12-F
TAITRON Components
SOD-123F
Zener diode
11.4..12.7V, Izt=5mA, 410mW
WI
BZT52C12-V
Vishay Semiconductor
SOD-123
Zener diode
12V±5%, Izt=5mA, Zzt=25, 500mW
WI
BZT52C12S
PanJIT Semiconductor
SOD-323
Zener diode
12V±5%, Izt=5mA, Zzt=25, 200mW
WI
BZT52C12WS
TAITRON Components
SOD-323F
Zener diode
11.40..12.60V, Izt=5.0mA, 200mW
WI
BZT52C12WT
TAITRON Components
SOD-523
Zener diode
11.40..12.60V, Izt=5mA, Zzt=25, 200mW
WI
BZT52C12WU
TAITRON Components
SOD-723
Zener diode
11.40..12.60V, Izt=5mA, Zzt=25, 200mW
WI
BZT52C13
Diodes
SOD-123
Zener diode
13V±5%, Izt=5mA, Zzt=30, 500mW
WI
BZT52C13
Diodes
SOD-123
Zener diode
13V±5%, Izt=5mA, Zzt=30, 500mW
WI
BZT52C13S
Diodes
SOD-323
Zener diode
13V±5%, Izt=5mA, Zzt=30, 200mW
WI
BZT52C13S
Diodes
SOD-323
Zener diode
13V±5%, Izt=5mA, Zzt=30, 200mW
WI
BZT52C13T
Diodes
SOD-523
Zener diode
13V±5%, Izt=5mA, Zzt=30, 150mW
WI
BZX384C12-F
TAITRON Components
SOD-323F
Zener diode
11.4..12.7V, Izt=5.0mA, 200mW
WI
BZX384C12-V
Vishay Semiconductor
SOD-323
Zener diode
12V±5%, Izt=5mA, Zzt=10, 200mW
WI
BZX584C12
PanJIT Semiconductor
SOD-523
Zener diode
11.4..12.7V, Izt=5mA, Zzt=25, 200mW
WI
BZX784C12
PanJIT Semiconductor
SOD-723
Zener diode
11.40..12.60V, Zzt=25, Izt=5mA, 200mW
WI
BZX84B12
PanJIT Semiconductor
SOT-23
Zener diode
11.76..12.24V, Zzt=25, Izt=5mA, 410mW
WI
BZX84C12
Won-Top Electronics
SOT-23
Zener diode
11.4..12.7V, Zzt=25, Izt=5mA, 350mW
WI
BZX84C12TW
PanJIT Semiconductor
SOT-363
Zener diode
Triple, 11.76..12.24V, Zzt=25, Izt=5mA, 200mW
WI
BZX84C12W
Won-Top Electronics
SOT-323
Zener diode
11.4..12.7V, Zzt=25, Izt=5mA, 200mW
WI
LBZT52C13T1G
Leshan Radio Company
SOD-123
Zener diode
12.4..14.1V, Izt=5mA, 500mW
WI
MEZ02-12-D3
Matsuki Electronic Company
SOD-323
Zener diode
11.40..12.60V, Izt=5mA, Zzt=20, 200mW
WI
MM3Z13V
Secos
SOD-323
Zener diode
12.4..14.1V, Izt=5mA, Zzt=30, 200mW
WI
P4SMA120C
Fagor Electronica
DO-214AC
Transient voltage supressor
Vbr=114..126V, Vrwm=102V, 2.5A, 400W(1ms), Bidir.
WI
PT7M6314US47D3

SOT-143
Voltage detector IC
4.7V±1.5%, 200ms, -Restet PPO, -MR
WI
SMZG3793A
Vishay Semiconductor
DO-215AA
Zener diode
15V±5%, 85mA, Zzt=9, 1.5W
WI
SMZJ3793A
Vishay Semiconductor
DO-214AA
Zener diode
15V±5%, 85mA, Zzt=9, 1.5W
WI
TZTC12WS
TAITRON Components
SOT-323
Zener diode
11.40..12.60V, Izt=5mA, Zzt=25, 200mW
WI-
3SK197
Renessas
SOT-143
MOSFET n-type
Dual gate, VHF-TV-Tun, 12V, 35mA, Idss=10mA, Up<1V
WIs
BCR158
Infineon Technologies
SOT-23
PNP transistor
Sw, 50V, 100mA, 200mW, R1/R2=2.2k/47k, 200MHz
WIs
BCR158F
Infineon Technologies
TSFP-3
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=2.2k/47k, 170MHz
WIs
BCR158T
Infineon Technologies
SOT-416
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=2.2k/47k, 170MHz
WIs
BCR158W
Infineon Technologies
SOT-323
PNP transistor
Sw, 50V, 100mA, 250mW, R1/R2=2.2k/47k, 200MHz